递减

Traditional form:

遞減

Pinyin (reading):

dìjiǎn

Definitions:

• progressively decreasing
• gradually falling
• in descending order

Characters:

• 递 - to deliver, to hand over; substitute
• 减 - to decrease, to subtract, to diminish

Traditional characters:

• 遞 - to deliver, to hand over; substitute
• 減 - to decrease, to subtract, to diminish